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113 results about "Graphyne" patented technology
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Graphyne is a theorized allotrope of carbon. Its structure is one-atom-thick planar sheets of sp and sp²-bonded carbon atoms arranged in crystal lattice. It can be seen as a lattice of benzene rings connected by acetylene bonds. Depending on the content of acetylene groups, graphyne can be considered a mixed hybridization, spⁿ, where 1 < n < 2, and thus differs from the hybridization of graphene (considered pure sp²) and diamond (pure sp³).
Method for preparing graphite alkyne film
The invention discloses a method for preparing a graphite alkyne film. The method comprises that: a copper sheet or any one substrate the surface of which is covered with a copper film layer is used as a substrate; 6-alkynyl-benzene is subjected to coupling reaction in a solvent under the catalytic action of the copper to obtain the graphite alkyne film on the surface of the substrate. The method for preparing the graphite alkyne film, which is provided by the invention, has simple and convenient process, and can carry out large-scale preparation of the graphite alkyne film on the surface of the copper sheet or the substrate any surface of which is covered with the copper. The electrical conductivity of the graphite alkyne film is 2.516*10-4S / m. The film has uniform surface, can exist stably in the air, is a semiconductor with similar performances with silicon, and has potential application prospect in the fields of catalysis, electron, semiconductor, energy, material and the like.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Nitrogen-doped graphdiyne riveted transition metal monatomic catalyst as well as preparation method and application thereof
The invention discloses a nitrogen-doped graphdiyne riveted transition metal monatomic catalyst as well as a preparation method and application thereof. According to the catalyst, nitrogen atoms are doped in a novel carbon material graphdiyne carrier, transition metal single atoms are riveted on the surface of nitrogen-doped graphdiyne through the covalent effect between the transition metal single atoms and N and C atoms, and thus transition metal is uniformly dispersed on the surface of the nitrogen-doped graphdiyne in a single atom form to form the catalyst. Transition metal atoms in the catalyst are uniformly dispersed on the surface of the nitrogen-graphdiyne-based catalyst in a single atom state, a large number of active sites are provided for oxidation-reduction reaction, graphdiyneis adopted as a carbon substrate and has excellent morphological characteristics, formation of catalytic active sites is facilitated, and catalytic advantages of single atoms are brought into play. The catalyst disclosed by the invention has high electrocatalytic activity on oxygen reduction under an alkaline condition, is simple and effective in preparation process, low in cost and easy to popularize and put into production, and has important significance in the field of fuel cell development and application.
Owner:NANJING NORMAL UNIVERSITY
Preparation method of N-containing graphdiyne material
PendingCN111689486AImprove hydrogen evolution performanceImprove energy storage performanceCarbon preparation/purificationLithium-ion batteryUltrasound method
The invention discloses a preparation method of an N-containing graphdiyne material, wherein the preparation method comprises the steps: by using an N-containing six-membered heterocyclic compound anda metal alkyne compound as raw materials and ethanol as a solvent, carrying out ultrasonic reaction under the condition of ultrasonic frequency of 50-55 kHz, separating after the reaction is finished, washing a collected solid, and drying to obtain the N-containing graphdiyne material. The N-containing graphdiyne material is prepared by adopting an ultrasonic method, taking the N-containing six-membered heterocyclic compound and a metal alkyne compound as raw materials and taking ethanol as a solvent, nitrogen elements in the prepared N-containing graphdiyne material are distributed orderly,and the whole preparation method is simple to operate, mild in condition, green, environment-friendly and relatively low in equipment requirement; besides, experiments show that the N-containing graphdiyne material prepared by the method has excellent hydrogen evolution performance and energy storage performance, effectively promotes the application of the graphdiyne material in the fields of hydrogen evolution materials, supercapacitors, lithium ion battery negative electrode materials and the like, and has a wide industrial application prospect.
Owner:SHANGHAI UNIV OF ENG SCI
Centimeter sized graphdiyne synthesized through liquid-liquid interface polymerization reaction and application
ActiveCN109626353AGood continuous uniformityStable structureCarbon preparation/purificationOrganic solventCu2 ions
The invention discloses centimeter sized graphdiyne synthesized through a liquid-liquid interface polymerization reaction and a preparation method and application thereof. The preparation method of agraphdiyne membrane comprises the following steps that an alkynyl monomer is dissolved into an organic solvent, and an organic phase solution is obtained; copper ions and a nitrogen-containing ligandare dissolved into an aqueous phase, and an aqueous solution is obtained; the aqueous solution containing copper ions and the nitrogen-containing ligand is dropped into an upper layer of the organic phase solution, a reaction system with two-phase solutions is formed, and then standing is performed, so that the centimeter sized graphdiyne membrane is obtained. The self-supporting large-area uniform-connected graphdiyne membrane can be synthesized, no substrate supporting is needed, graphdiyne does not need to be peeled from the substrate, the influence of an etching substrate on the graphdiyneproduct performance is avoided, the graphdiyne membrane product can be directly subjected to representation and application, and the application prospect in the fields of photoelectric chemistry, energy, catalysis, electronics, biological medicine and materials is wide.
Owner:SUN YAT SEN UNIV
N-doped graphdiyne material and preparation method and application thereof
ActiveCN108455593AEfficient catalytic abilityHigh catalytic efficiencyPhysical/chemical process catalystsGrapheneTriple bondGraphyne
The invention provides a N-doped graphdiyne material and a preparation method and application thereof. In the N-doped graphdiyne material, a sp hybrid state nitrogen element is contained. The sp hybrid nitrogen atom is contained in the N-doped graphdiyne material, in other words, the N-doped graphdiyne material contains the nitrogen element existing in a carbon-nitrogen triple-bond mode.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Preparation method of hetero-atom-doped graphyne
The invention discloses a preparation method of hetero-atom-doped graphyne, and belongs to the field of preparation of a doped nanometer material. The defect of single structure and performance of a graphyne material in the prior art can be overcome. The method comprises the following steps: drying a graphyne sample, putting the graphyne sample in a temperature programmed tubular furnace, beginning temperature programming, adding a simple substance or compound containing a doped element, and performing a reaction in a temperature range of 500-1500 DEG C to obtain the doped graphyne with the doped element substituted or added. The preparation method is simple in process and convenient to operate, and the doped graphyne can be obtained with no need of complex equipment. The preparation method is suitable for industrial production.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Preparation method of graphdiyne-loaded monatomic catalyst
PendingCN111490258AAvoid reunionDestabilizingCell electrodesSolid electrolyte fuel cellsPtru catalystPhysical chemistry
The invention relates to a preparation method of a graphdiyne-loaded monatomic catalyst, which belongs to the technical field of preparation of monatomic catalysts. The technical problems of atom aggregation and carrier structure damage easily caused by instability of existing metal monatomic and carrier materials at continuous high temperature is solved. The method comprises the steps of 1 mixinghexabromobenzene and calcium carbide, dissolving in ethanol, and grinding; 2 centrifuging, washing and calcining the generated reaction product; 3 carrying out acid washing treatment on the calcinedproduct to obtain graphdiyne; 4 soaking graphdiyne in a metal precursor solution to obtain graphdiyne loaded with a metal precursor; and 5 carrying out joule heating treatment on the graphdiyne loadedwith the metal precursor to a certain temperature to obtain the graphdiyne-loaded metal monoatomic catalyst. The monoatomic catalyst prepared by the method can prevent continuous high temperature from damaging the stability of the catalyst carrier, and atom aggregation is avoided.
Owner:CHAOWEI POWER CO LTD +1
Preparation method of ultrathin nanoscale graphdiyne film
ActiveCN110668436AThe overall thickness is thinReduce thicknessGraphiteNanotechnologyChemical treatmentThin membrane
The invention belongs to the field of graphdiyne film preparation, and particularly relates to a preparation method of an ultrathin nanoscale graphdiyne film. The preparation method comprises the following steps: preparing an ultrathin graphdiyne film by adopting plasma etching; placing a copper substrate attached with the original graphdiyne film in a plasma etching machine; injecting oxygen intothe cavity of the plasma etching machine, and performing etching; and transferring the film to a target substrate by using a PMMA auxiliary process after the etching, and removing PMMA to obtain theultrathin graphdiyne film. The preparation method adopts the plasma etching to prepare the ultrathin graphdiyne film, and the plasma etching is carried out on graphdiyne grown on a solution on the copper substrate to reduce the thickness of the graphdiyne, and then the graphdiyne is transferred to another substrate, so that complex chemical treatment is omitted, the ultrathin nanoscale graphdiynefilm is obtained, and a large number of functional groups generated by side reactions of graphdiyne are removed.
Owner:UNIV OF SCI & TECH BEIJING
Preparation method of human measles immune sensor based on graphdiyne and silver nanoparticle cage
ActiveCN105842314ASpecific surface area enlargementFacilitates electron transferBiological material analysisMaterial electrochemical variablesSignalling moleculesEngineering
The invention relates to a preparation method of a human measles immune sensor based on graphdiyne and a silver nanoparticle cage, and belongs to the technical field of novel biological sensing and detection. Graphdiyne is of a carbon-carbon triple-bond linear structure with an sp hybridized state and has the advantages of zero cis-trans-isomer, high conjugation and the like; due to excellent electrical, optical and photoelectric properties, graphdiyne is a key material of a novel electronic and photoelectric device of the next generation. Meanwhile, by the use of good pi-pi conjugation effect, a high-flux load of signal molecules is realized, and a signal error caused by instable combination is reduced. Therefore, the human measles immune sensor based on graphdiyne and the silver nanoparticle cage can sensitively detect measles viruses.
Owner:UNIV OF JINAN
Preparation method of graphdiyne film and graphdiyne film
The invention discloses a preparation method of a graphdiyne film and the graphdiyne film prepared by the method. The method comprises the following steps: (1) mixing a catalyst with water to obtain acatalyst solution; (2) mixing a monomer with an organic solvent to obtain a monomer solution, and adding tetrabutylammonium fluoride into the monomer solution to obtain a hexaalkynyl benzene solution; (3) mixing the hexaalkynyl benzene solution, the catalyst solution and water, and uniformly mixing in an inert gas atmosphere under the action of stirring to obtain a mixed solution; and (4) reacting the mixed solution, and separating from the reaction product to obtain the graphdiyne film. Through the method, the graphdiyne film with high yield can be simply and efficiently obtained, and industrial production is easy.
Owner:QINGDAO UNIV OF SCI & TECH
Thick-film resistance paste with electrostatic discharge resistance and low encapsulation change rate
ActiveCN111916248ASmooth temperature changeImprove resistance temperature change stabilityNon-conductive material with dispersed conductive materialThick film resistorsFilm resistanceGraphite
The invention discloses thick-film resistor paste and a thick-film resistor prepared from the thick-film resistor paste. A proper amount of graphdiyne is added into thick-film resistor paste in the form of a paste additive or a proper amount of graphdiyne is introduced into the thick-film resistor paste in the form of a glass powder additive. The thick-film resistor paste can be used for preparinga thick-film resistor which is stable in resistance temperature change and small in electrostatic discharge resistance and / or encapsulation change rate.
Owner:西安宏星电子浆料科技股份有限公司
Hydrophobic graphdiyne composite iron-containing MOF adsorbent and preparation method thereof
ActiveCN111389384AImprove moisture resistanceEnhanced Preferential and Selective AdsorptionGas treatmentOther chemical processesBenzenePickering emulsion
The invention discloses a hydrophobic graphdiyne composite iron-containing MOF adsorbent and a preparation method thereof. The method comprises the following steps: firstly, grinding MOF (Fe) into small-particle seed crystals, and dispersing the small-particle seed crystals into a copper acetate aqueous solution by using ultrasonic waves; adding dichloromethane into the solution, and stirring at ahigh speed to prepare a Pickering emulsion; dissolving hexacetenyl benzene into a certain amount of dichloromethane, and adding the mixture into the Pickering emulsion; growing graphdiyne on an emulsion interface containing a Cu catalytic site, then heating in a water bath to remove an organic phase, and centrifugally separating out graphdiyne composite seed crystals MOF (Fe); and finally, putting the graphdiyne composite seed crystals MOF (Fe) into ferric nitrate nonahydrate and trimesic acid to carry out secondary hydrothermal growth of MOF (Fe) crystals to obtain the high-hydrophobicity graphdiyne composite MOF (Fe) adsorbent. The stability of the Pickering emulsion is controlled by controlling the addition amount of MOF (Fe) and the ratio of a water phase to an oil phase, so that theaction between graphdiyne and MOF (Fe) seed crystals is influenced, the growth of MOF (Fe) is influenced, and the final hydrophobicity of the adsorbent and the preferential selective adsorption on hydrocarbon VOCs are effectively improved.
Owner:GUANGXI UNIV
Preparation and modulation method of photoelectric synaptic device
ActiveCN111192938ABroaden the response range of light waveMeet the requirements of complex application scenariosFinal product manufacturePhysical realisationField effectField-effect transistor
The invention discloses a preparation and modulation method of a photoelectric synaptic device. The preparation method comprises the following steps: preparing a field effect transistor structure comprising a gate layer, a dielectric layer, a source electrode and a drain electrode; transferring a graphene thin film over the source electrode and the drain electrode; processing the graphene film into a conductive channel; and preparing a graphdiyne thin film on the surface of the graphene thin film processed into the conductive channel to obtain the photoelectric synapse device of the field effect transistor structure. According to the invention, the graphene film is transferred above the source electrode and the drain electrode, the graphdiyne thin film is prepared on the surface of the graphene thin film to obtain the photoelectric synapse device of the field effect transistor structure, by preparing the graphdiyne thin film on the surface of the graphene thin film, the light wave response range is widened, regulation and control of light signals and electric signals are achieved through the field effect transistor structure, and therefore the requirements under complex applicationscenes are met. The method can be widely applied to the technical field of artificial neural networks.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Preparation method of two-dimensional graphdiyne nanosheet, working electrode, and photoelectric detector
InactiveCN111732091AThickness fastThickness is easy to controlGrapheneCoatingsPhotovoltaic detectorsGraphite
The invention provides a preparation method of a two-dimensional graphdiyne nanosheet. The method comprises the following steps: 1, providing an ethanol dispersion of graphdiyne; and transferring theethanol dispersion liquid of graphdiyne to a temperature of 2-15 DEG C, carrying out ultrasonic treatment for 1-7 days, separating the ethanol dispersion liquid of graphdiyne after ultrasonic treatment by using a step-by-step centrifugation method, collecting graphdiyne nanosheets obtained at a speed of 5,000-8,000 r / min, and drying the obtained two-dimensional graphdiyne nanosheets. The two-dimensional graphdiyne nanosheet is an ultrathin graphdiyne nanosheet, of which the thickness can reach 0.46 nm; the preparation process of the ultrathin graphdiyne nanosheet is simple and rapid, the thickness of the graphdiyne nanosheet is controllable, and large-scale preparation of the graphdiyne nanosheet is also easy to realize. The invention also provides a working electrode and a preparation method thereof and further provides a photoelectric detector.
Owner:SHENZHEN UNIV
Preparation method and application of three-dimensional graphdiyne/Fe3O4 nano composite material
ActiveCN111847521AImprove stabilityGood dispersionMaterial nanotechnologyFerric oxidesNanoparticleGraphite
The invention discloses a preparation method of a three-dimensional graphdiyne / Fe3O4 nano composite material. The preparation method comprises the steps: (1) treating three-dimensional graphdiyne; and(2) mixing FeCl3 and FeCl2 solutions with a certain concentration, and violently stirring under the protection of nitrogen; dispersing the treated graphdiyne GDY into the mixed solution, keeping theconstant temperature of 30-50 DEG C, dropwise adding strong base, adjusting the pH value of the solution, quickly heating after reacting for a period of time, and continuously carrying out stirring reaction for a period of time at a constant temperature; and finally, naturally cooling to room temperature, separating, cleaning, and carrying out vacuum drying to obtain the three-dimensional graphdiyne / Fe3O4 nano composite material. According to the composite material, a three-dimensional surface structure of GDY, a great effective surface area and excellent surface characteristics of graphdiyneare utilized, Fe3O4 nano-particles are compactly and uniformly loaded on the surfaces of graphdiyne nano-sheets, and the stability and dispersity of the Fe3O4 nano-particles are greatly improved. Thecomposite material can be used for sewage purification.
Owner:HUNAN UNIV OF SCI & TECH
Preparation method and application of graphdiyne in-situ grown metal organic framework material
ActiveCN112264066ABreak through limitationsHigh catalytic activityCell electrodesCatalyst activation/preparationPtru catalystAlcohol ethyl
The invention belongs to the technical field of catalysts, and particularly relates to a preparation method and application of a graphdiyne in-situ grown metal organic framework material. The preparation method comprises the following steps: evenly dispersing graphdiyne in ethyl alcohol, adding transition metal salt for dissolution, and conducting drying to obtain graphdiyne having adsorbed metalsalt; carrying out a hydrothermal reaction on organic ligand and the graphdiyne having adsorbed metal salt to obtain a metal organic framework material growing on graphdiyne in situ; and carrying outa pyrolysis reaction to obtain the graphdiyne in-situ grown metal organic framework material. According to the invention, graphdiyne and a metal organic framework material are combined through an in-situ growth technology, a non-noble metal-based oxygen reduction electrocatalytic material with high half-wave potential under an alkaline condition is prepared, and the problems that a noble metal catalyst is high in cost and low in reserves in the prior art are solved.
Owner:QILU UNIV OF TECH
Soluble graphdiyne derivative and preparation method and application thereof
ActiveCN111574465AOvercoming dispersionOvercome solubilityOrganic chemistryChlorobenzeneOrganic solvent
The invention belongs to the technical field of functional materials, and particularly relates to a soluble graphdiyne derivative, and a preparation method and application thereof. Compared with graphdiyne, the dissolvability of the graphdiyne derivative disclosed by the invention in an organic solvent is greatly improved. For example, the graphdiyne derivative provided by the invention has good solubility in polar organic solvents such as dichloromethane, chlorobenzene, N-methylpyrrolidone (NMP) and tetrahydrofuran, and the concentration of the graphdiyne derivative is up to 5mg.ml<-1> in chlorobenzene; and therefore, the problem that graphdiyne is difficult to disperse or dissolve in a solution is solved, and the graphdiyne derivative has great application value.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Odorless asphalt mixture, preparation method thereof and application of odorless asphalt mixture on pavement
ActiveCN111234541AHigh strengthImprove rheologyIn situ pavingsBuilding insulationsVegetable oilCarbon nanotube
Owner:湖南省溆怀高速公路建设开发有限公司
Method for detecting dopamine by acidified graphdiyne nanotube/short multi-walled carbon nanotube modified electrode
ActiveCN111474220AImprove enrichment capacityHigh detection sensitivityMaterial electrochemical variablesGraphiteDopamine
The invention relates to a method for detecting dopamine by an acidified graphdiyne nanotube / short multi-walled carbon nanotube modified electrode. By using composite graphdiyne nanotubes GDY and short multi-walled carbon nanotubes S-MWCNTs as electrode modification materials, a GDY / S-MWCNTs modified electrode for detecting dopamine with high sensitivity and high selectivity is prepared. As the GDY has a tremella-shaped three-dimensional surface structure, the GDY has a great effective surface area and shows ultrahigh DA enrichment capacity. The S-MWCNTs are obtained by ultrasonically treatingthe multi-walled carbon nanotubes in mixed acid, can be inserted into acupuncture points on the GDY nanotubes and are in full contact with the GDY nanosheets, so that a good way is provided for accelerating electron transmission of a sensor interface. Because the surfaces of the acidified GDY and S-MWCNT contain a large number of chemical oxygen-containing groups, some interferent molecules can be eliminated through electrostatic repulsion, so that the selectivity of a sensor interface to DA is improved. A modified electrode prepared from the material has good response performance to dopaminedetection, and the lowest detection limit can reach 8 pmol / mL.
Owner:HUNAN UNIV OF SCI & TECH
Biosensor based on two-dimensional all-carbon nano material graphdiyne and application of biosensor
ActiveCN112209372AGood dispersion in water phaseGood reproducibilityNano-carbonMaterial electrochemical variablesElectrochemical biosensorGraphyne
The invention discloses an electrochemical biosensor based on graphdiyne as well as a preparation method and application thereof, and the preparation method comprises the following steps: immobilizinga mode enzyme on the surface of the graphdiyne, mixing with a film-forming material to generate a composite material, and immobilizing the composite material on the surface of a glassy carbon electrode to obtain the electrochemical biosensor. The advantages of the graphdiyne which is a novel two-dimensional all-carbon nano material, such as a planar structure similar to graphene and other two-dimensional materials, a large comparison area, good aqueous phase dispersibility and a high conjugate structure, are fully utilized, the graphdiyne is used as an enzyme carrier of the sensor to preparethe biosensor, the preparation process is simple, and the cost is low; the complex sample pretreatment process is not needed, the detection sensitivity to bisphenol compounds is high, the detection limit is low, and the reproducibility is good; and the biosensor is quick in response to a target compound, easy to miniaturize, and suitable for point field detection, continuous online monitoring andthe like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Praseodymium cobaltate/attapulgite/graphdiyne nanocomposite material, preparation method and application thereof
ActiveCN109012150AEvenly dispersedAvoid reunionOther chemical processesDispersed particle separationNanocompositeGraphyne
Belonging to the field of new chemical materials, the invention in particular relates to a praseodymium cobaltate / attapulgite / graphdiyne nanocomposite material, a preparation method and application thereof. The method includes: firstly carrying out metal-catalyzed cross coupling reaction to prepare graphdiyne, then taking attapulgite as the carrier to load praseodymium cobaltate by sol-gel process, finally utilizing the unique acetylenic bond in graphdiyne material to induce the positively charged characteristic of parts of carbon atoms in a carbon skeleton, and loading praseodymium cobaltate / attapulgite on a graphdiyne sheet layer. According to the invention, attapulgite is taken as the skeleton, on which perovskite nanoparticles are evenly loaded, agglomeration of perovskite particles isavoided, attapulgite is evenly dispersed on graphdiyne, the special structure of graphdiyne itself is utilized to construct a Z type photocatalyst, which can inhibit the electron-hole compounding ofpraseodymium cobaltate and attapulgite, prolong the lifetime of charge carriers, well give play to the synergistic catalysis role of the three substances, and improve the optical coupling denitrationperformance.
Owner:JIANGSU HUAYUAN MINING
Method for patterning transfer of graphdiyne film
ActiveCN112859514AIncreased process complexityNot effectivelyOriginals for photomechanical treatmentThin membraneGraphite
The invention discloses a method for patterning transfer of a graphdiyne film, and belongs to the field of processing of two-dimensional materials. The method comprises the following steps of: uniformly coating photoresist on a target substrate, carrying out patterning exposure and development, and exposing a place where the pattern of the graphdiyne film is expected to be transferred; transferring the graphdiyne film to the developed target substrate through a wet transfer method; and removing photoresist from the target substrate on which the graphdiyne film is transferred, so as to obtain the patterned graphdiyne film. The invention aims to overcome the defects of the prior art, and provides the method for patterned transfer of the graphdiyne thin film in the laboratory; the method is simple to operate; the precision and success rate of patterned transfer of the graphdiyne film are high; the obtained graphdiyne film is relatively clean; and the process problem that the transfer position, shape and size of the graphdiyne film are uncontrollable is solved.
Owner:UNIV OF SCI & TECH BEIJING
Method for researching seawater desalination with hydroxyl functionalized single-layer film material
ActiveCN111573869AGeneral water supply conservationSeawater treatmentPhysical chemistryThin membrane
The invention provides a method for researching seawater desalination with a hydroxyl functionalized single-layer film material. The method comprises the following steps: after standing and filteringof seawater, constructing a relationship of GO original structure, group modification construction of single-layer structures with different charged properties, modification density adjustment and construction of single-layer GO with different surface structures and construction of few-layer structures; constructing a relationship of graphdiyne or 2D-COF original structure, cavity adjustment and construction of single-layer structures with different cavity sizes, group modification construction of single-layer structures with different electrification properties and construction few-layer structures; carrying out molecular dynamics simulation on each component in the seawater; and constructing a relation model of seawater component, pore structures, microcosmic desalination mechanisms andmacroscopic desalination performances. By researching and revealing the internal mechanism of graphene-like seawater desalination, a theoretical basis is provided for the design of a novel desalination material.
Owner:NANJING UNIV OF POSTS & TELECOMM
Graphdiyne composite material for fuel preparation through photocatalytic CO2 reduction and preparation method thereof
PendingCN114225947AImprove thermal stabilityImprove mobilityGas treatmentPhysical/chemical process catalystsHeterojunctionNickel salt
The invention discloses a graphdiyne composite material for fuel production through photocatalytic reduction of CO2, and belongs to the technical field of fuel production through photocatalytic reduction of CO2, the graphdiyne composite material is formed by compounding a NiIn2S4 precursor solution and graphdiyne, and the NiIn2S4 precursor solution comprises a solvent, a nickel salt, an indium salt and a sulfur source; the NiIn2S4 / graphdiyne composite material not only has the characteristics of excellent thermal stability, ultrahigh carrier mobility, high specific surface area, natural intrinsic band gap and the like of graphdiyne, but also integrates the high catalytic activity of NiIn2S4, and a heterojunction formed by the NiIn2S4 and the graphdiyne widens the visible light absorption range, promotes the separation efficiency of photo-induced electrons / holes and improves the photocatalytic activity of the graphdiyne. The photocatalytic efficiency is enhanced, and the CO2 photocatalytic reduction efficiency is improved.
Owner:CHINA UNIV OF MINING & TECH +1
Graphdiyne synthesis method
ActiveCN113774407AShort reaction timeReduce usageElectrolysis componentsBulk chemical productionElectrolytic agentCopper foil
The present invention relates to a graphdiyne synthesis method, which comprises that a copper foil or a copper-loaded substrate is adopted as a working electrode, and an electrolytic solution containing a graphdiyne precursor and an electrolyte is subjected to electrochemical treatment so as to generate graphdiyne. The graphdiyne synthesis method provided by the invention has the advantages of various synthesis means and simple and time-saving synthesis process, reduces the use of organic reagents, and is more green, economical, efficient and easy to industrialize.
Owner:LANZHOU UNIVERSITY
Double-ended photoelectric memory and preparation method and application thereof
ActiveCN112289864AImprove data storage capacityStrong mechanical strengthTransistorSemiconductor/solid-state device manufacturingElectron holeHigh density
The invention discloses a double-ended photoelectric memory and a preparation method and application thereof, the double-ended photoelectric memory comprises a conductive channel, a barrier layer, a tunneling layer and a top photosensitive floating gate which are sequentially arranged from bottom to top, and the top photosensitive floating gate is graphdiyne. According to the memory, graphdiyne serves as a top photosensitive floating gate, the graphdiyne has a natural band gap, strong light absorption capacity and a high-density state, a large number of electron hole pairs are generated underillumination, more charges can be stored, gate coupling ratio degradation and inter-unit interference are inhibited, so that the data storage capacity of the memory is improved and the working voltageis reduced. Meanwhile, the memory can be made into flexible equipment to be used for a wearable system, so that the miniaturization of the equipment is facilitated, and the integration density is improved.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Graphite alkyne and click chemistry-based copper ion detection method, kit and application
ActiveCN110907421AExcellent fluorescence resonance energy transfer abilitySimplify operation timeFluorescence/phosphorescenceCu2 ionsClick chemistry
The invention provides a graphdiyne and click chemistry-based copper ion detection method, a kit and an application. The detection method comprises the following steps of (1) adding a copper ion standard solution with a concentration gradient and a reducing agent into a mixed solution of graphdiyne and group-modified double-stranded DNA, mixing and reacting to obtain a reaction solution, testing the fluorescence intensity of the reaction solution by a fluorescence spectrometry, and drawing a standard curve according to the relationship between the concentration and the fluorescence intensity;(2) adding a to-be-detected sample solution and the reducing agent into the mixed solution of graphdiyne and the group-modified double-stranded DNA, mixing and reacting to obtain the reaction solution, testing the fluorescence intensity of the reaction solution according to fluorescence spectrometry, and quantifying the concentration of the copper ions in the to-be-detected sample according to thestandard curve obtained in the step (1). By selecting the graphite alkyne in a detection system, the situation that the alkynyl groups are used for modification is avoided, the detection efficiency can be greatly improved, and the operation steps are simplified.
Owner:SHENZHEN PEOPLES HOSPITAL
Low contact resistance type resistance paste
ActiveCN114121335AAvoid reunionSmall granularityResisitors with sliding contactNon-conductive material with dispersed conductive materialElectrical resistance and conductanceGraphite
The invention discloses a low contact resistance type resistance paste. The resistance paste comprises the following components in percentage by mass: 15-45% of conductive powder, 20-40% of a glass binding phase, 1-10% of an additive and 30-45% of an organic carrier, wherein the conductive powder is graphdiyne composite lead ruthenate prepared by a chemical deposition method, and the glass binding phase is lead borosilicate glass powder with the softening temperature of 500-600 DEG C. The resistance paste disclosed by the invention has the characteristics of good temperature coefficient and small contact resistance, and can meet the use requirements of resistance paste products for thick-film sliding resistors and electric tools.
Owner:西安宏星电子浆料科技股份有限公司
Stannic dioxide/graphdiyne compound interface layer and preparation and application thereof
PendingCN110817860AImprove conductivityImprove stabilityGraphiteSolid-state devicesChemical physicsPerovskite solar cell
The invention belongs to the field of inorganic functional materials, and relates to a stannic oxide / graphdiyne compound interface layer and preparation and application thereof. The compound is formedby embedding monodisperse stannic dioxide particles into a graphdiyne net structure; wherein the doping mass of graphdiyne in the compound is 0.1-50%. Graphdiyne is used for doping and modifying stannic dioxide, so that a composite electron transport material with good conductivity and high stability is obtained; when the composite electron transport material is applied to perovskite solar cells,the performance of the perovskite solar cells is further improved, and meanwhile, the large-scale commercialization of the composite electron transport material can be realized.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
Sequence for determining escherichia coli gene by using nanogold-graphdiyne composite material modified electrode
PendingCN114280127AMicrobiological testing/measurementMaterial analysis by electric/magnetic meansEscherichia coliCyclic voltametry
The invention relates to a nanogold-graphdiyne composite material modified electrode for determining an escherichia coli gene sequence, which is characterized in that an ionic liquid modified carbon paste electrode (CILE) is used as a substrate electrode, and the nanogold (Au)-graphdiyne (GDY) composite material modified electrode is prepared by two steps of a dispensing method and a constant potential deposition method and is used as a working electrode. A scanning electron microscope (SEM) observes the morphology of the microscopic size of the GDY and the Au-GDY composite material thereof. Cyclic voltammetry (CV) results show that the Au-GDY composite material effectively improves the electrochemical performance of a modified electrode interface and improves the electron transfer rate of the electrode. The sulfydryl-modified probe ssDNA is successfully fixed on the surface of the modified electrode by utilizing the self-assembly bonding effect of gold and sulfur. Methylene blue (MB) is used as an electrochemical indicator and is used for judging a signal successfully captured by a target sequence. Results of differential pulse voltammetry (DPV) show that the Au-GDY / CILE modified electrode has a wide detection range (1.0 * 10 <-15 > mol / L-1. 0 * 10 <-7 > mol / L), a low detection limit (3.17 * 10 <-16 > mol / L) and high sensitivity (2.91 A / (M.cm < 2 >)) on gene sequence detection of escherichia coli.
Owner:HAINAN NORMAL UNIV
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